Apparatus for the removal of coal-ash.



LEBEANC. APPARATUS FOR THE REMOVAL OF COAL ASH.

APPLICATION FILED MAY 9. I914.

1,254,244. Patented Jan. 22, 1918.

IN VE N TOR.

panying longitudinal section P UFAGTUBING COMPANY, A CORPORATION OF PENNSYLVANIA.

APPARATUS non rim REMOVAL or COAL-ASH.

To all whom it may concern:

Be it known that I, MAURICE LEBLANG, a,-

citizen of the Republic of France, and a resident of Croissy, Seine-et-Oise, France, (Whose post-ofiice address is Val-sur-Seine, Croissy, Seine-et-Oise, France), have made a new and useful Invention in Apparatus for the Removal of Goal-Ash, of which the following is a specification. A

This invention relates to improved apparatus for removing the ashes from stoke holes especially on board ship, which apparatus may also be employed as a bilge pump.

It has heretofore been suggested to employ for removing ashes, especially from marine furnaces, either some kind of centrifugal pump the rotor of which is traversed by the ashes thus giving rise to very rapid. wear, or a high pressure water jet which is caused to travel along the longitudinal axis of the evacuation pipe into which the ashes are introduced. In this case the output will be very low owing to the hi h pressure required.

he object of the present invention is to construct an improved apparatus in which the above disadvantages are avoided and according thereto the ashes are withdrawn by contact with water which is caused to flow through a converging-diverging nozzle the converging portion of the nozzle being adapted to be moved longitudinally in order to open and close the entry port for the ashes so that the starting of the apparatus can be safely and readily efiected.

The apparatus is illustrated in the accomdrawing in which Figure l" is a of the improved apparatus, Fig. 2 a section on the line 11-11 of Fig. 1, and Fig. 3 an elevation showing the apparatus with a feed pump and its propelling motor.

Referring now to Figs. 1 and 2, the water nozzle is provided with a diverging member 1 and .a converging member 2 which is longitudinally movable by means of a rack 3 engaging with a toothed sector 4 operated by a lever 5. Said lever carries a'catch 6 the function of which is hereinafter explained. Other means may be rovided for moving the converging memher 2 if desired. '1 is a charging casing Specification of Letters Patent.

Application filed m a, 1914. Serial no. 837,557.

Patented Jan. 22, 91m.

'which may be provided with a hopper 8, said casing being connected with the converging diverging nozzle 1, 2, through a circular or1- fice 9 of the same diameter as the narrowest part of the diverging member 1 of the nozzle. A damper 10 operated by a suitable handle 11 is provided for closing the bottom ofthe hopper 8.

The operatlon of the apparatus is as follows: The converging member 2 of the nozzle having been moved toward the diverging member of, the nozzle by rotating the lever 5 in the counter-clockwise direction the appa; ratus is primed by admitting Water under pressure to the nozzle. The lever 5 is then rotated in the clockwise direction'so as to withdraw the converging member 2 of the nozzle from the diverging member 1 and open the orifice from the casing 7. The damper 10 having been withdrawn so asto open the bottom of the hopper 8 the ashes will be precipitated through the casing and into the nozzle being discharged through the diverging member 1. v

It will be noticed that in consequence of the partial vacuum created in the lower part of the casing 7 'bythe flow of water through the nozzle the ashes naturally tend to fall into the nozzle by reason of the atmospheric pressure. above them and it willfurthermore be observed that since the admission orifice 9 is of substantially the same area as the narrowest part of the diverging member 1 it is imposslblefor any choking to occur.

In Fig. 3 the apparatus above described is shown provided with a centrifugal feed pump 12 driven by an electric motor 13, placed in any, convenient position and con nected through'a valve 16 with the apparatus. lhis figure also shows by way of example various safety devices, namely a;

non-return valve 14 at the end of the diverging member 1 of the nozzle which prevents any backward return of water in the converging member 2 of the nozzle has been moved to its lower position in which the orifice 9 is closed.

It may be further pointed out that in case of a stoppage of the current of water through Wrongful operation of the apparatus, the damper 10 can be used to prevent the flow of water back into the furnace.

The apparatus hereinbefore described can also be employed as a bilge pump, the bilge water being withdrawn by friction with the water jet between the converging member 2 and. the diverging member 1 of the nozzle. The feed pump for supplying the water jet can be placed in any situation and consequently suificiently above the floor of the stoke-hold to render it impossible for it to be flooded.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed,'I declare that what I claim is:

1. In a device of the character described, a hopper for delivering ash, a two part nozzle, one part of which islongitudinally adjustable with relation to the other part, means for delivering actuating water to said nozzle and means dependent 'on the relative positions of said parts for controlling the starting operation of said water delivery means.

2. In a device of the character described, a two part nozzle having an intake port formed between the parts thereof, one of the parts of the nozzle being longitudinally adustable with relation to the other to close the port, means for delivering actuating liq uid to said nozzle and means dependent on the relative positions of the parts of said nozzle for controlling'the starting operation of said liquid delivering means.

In testimony whereof, I have hereunto subscribed my name this 25th day of April, 1914.

1 v MAURICE LEBLANC.

Witnesses:

LEON JEAN,

CHAS. P. PRESSLY. 

